Temperature requirements of tomatoes: tomatoes have different temperature requirements at different growth stages. The optimum temperature for seed germination is 25-30 degrees Celsius, the lowest germination temperature is 1 1 degrees Celsius, and the highest is 35 degrees Celsius. The seedling stage is 20-25℃ in the daytime and 15-20℃ at night, and the fruiting stage is 25-30℃ in the daytime and 13- 17℃ at night. /kloc-below 0/5℃, above 35℃ is not conducive to flowering and fruit setting.
Requirements of tomatoes on soil: tomatoes have low requirements on soil, and can be planted in loam with thick soil layer, good drainage and strong soil permeability, or in alkaline soil improved by sandy loam.
Tomato's requirements for light: Tomato has different requirements for light at different growth stages. They don't need light in the germination stage, but they need enough light in the seedling stage to develop well. Insufficient light will affect flower bud differentiation and pollination. In the fruit-bearing period, there are plenty of fruits and the fruits expand quickly. Insufficient light will affect the yield, and too strong and lasting light will cause sunburn to the fruit.
Water requirement of tomato: tomato has developed root system, strong water absorption capacity and strong evaporation water from leaves, which belongs to drought-tolerant crops, that is, drought-tolerant crops need a lot of water, grow rapidly at seedling stage, and the soil should not be too wet. Therefore, watering should be controlled and watered frequently during flowering and fruiting. It is generally guaranteed to water once every 10 day.